Year % of GDP 2005 13.976891795690207 2006 20.11758870535628 2007 19.605092216852206 2008 16.04990758252925 2009 23.008126220155557 2010 23.415738254297757 2011 20.36210101754038 2012 20.142362839246644 2013 25.87366419012518 2014 27.857376280979768 2015 39.0761498418302 2016 47.86791161437034 2017 46.97539417856593 2018 48.38727813656364 2019 56.26491825102566 2020 60.81358877531431 2021 52.975939030028194 2022 44.678534563223494 2023 54.676034648533815